If it is under All India Counselling, then you cannot. Because Private Medical Colleges do not participate in All India Counselling. AAFMC AIIMS, JIPMER, 15% GMC seats, Deemed Universities and Central Universities only fill under All India Quota. But if it about State Counselling, if you do not get a seat in GMC in Round 1, you can add Private Medical Colleges to your choices during choice filling. Use our college predictor to check the correct options for your rank: https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer